A/C Blower Motor Speed Control

A/C blower motor speeds are controlled by:

• A four-position blower motor resistor assembly located in the A/C evaporator housing (19850) downstream from the A/C evaporator core (19860).
• The switch (19986) is used to select LO, two intermediate fan speeds or HI.
• When the function selector knob (18519) is in the OFF position, the A/C blower motor is turned off. This is accomplished by a switch integral with the air conditioner control (19980) assembly.

Refer to System Airflow Schematic (MAX A/C, NORM A/C, FLOOR).